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CY8C9520A CY8C9540A CY8C9560A
20-, 40-, and 60-Bit I/O Expander with EEPROM
Features
■ I2C interface logic electrically compatible with SMBus
■ Up to 20 (CY8C9520A), 40 (CY8C9540A), or 60 (CY8C9560A) I/O data pins independently configurable as inputs, outputs, Bi-directional input/outputs, or PWM outputs
■ 4/8/16 PWM sources with 8-bit resolution ■ Extendable soft addressing algorithm allowing flexible I2C
address configuration
■ Internal 3-/11-/27-Kbyte EEPROM
■ User default storage, I/O port settings in internal EEPROM
■ Optional EEPROM write disable (WD) input
■ Interrupt output indicates input pin level changes and pulse width modulator (PWM) state changes
■ Internal power on reset (POR)
■ Internal configurable watchdog timer
Top Level Block Diagram
WD EEPROM
User Settings
Area
Us
CY8C9520A Datasheet
